US6067044A - Remote tracking and sensing system and method - Google Patents

Remote tracking and sensing system and method Download PDF

Info

Publication number
US6067044A
US6067044A US09/157,475 US15747598A US6067044A US 6067044 A US6067044 A US 6067044A US 15747598 A US15747598 A US 15747598A US 6067044 A US6067044 A US 6067044A
Authority
US
United States
Prior art keywords
tracking
traffic control
processor
remote tracking
wireless communication
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US09/157,475
Inventor
Terrence William Whelan
Amir Hossein Matini Kashani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GPS TECHNOLOGY SOLUTIONS LLC
Original Assignee
National Systems and Res Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by National Systems and Res Co filed Critical National Systems and Res Co
Priority to US09/157,475 priority Critical patent/US6067044A/en
Assigned to NATIONAL SYSTEMS AND RESEARCH reassignment NATIONAL SYSTEMS AND RESEARCH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KASHANI, AMIR H. M., WHELAN, TERRENCE W.
Application granted granted Critical
Publication of US6067044A publication Critical patent/US6067044A/en
Assigned to GPS TECHNOLOGY SOLUTIONS, LLC reassignment GPS TECHNOLOGY SOLUTIONS, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NATIONAL SYSTEMS & RESEARCH CO.
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/20Monitoring the location of vehicles belonging to a group, e.g. fleet of vehicles, countable or determined number of vehicles
    • G08G1/207Monitoring the location of vehicles belonging to a group, e.g. fleet of vehicles, countable or determined number of vehicles with respect to certain areas, e.g. forbidden or allowed areas with possible alerting when inside or outside boundaries
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13Receivers
    • G01S19/34Power consumption
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/0009Transmission of position information to remote stations
    • G01S5/0018Transmission from mobile station to base station
    • G01S5/0027Transmission from mobile station to base station of actual mobile position, i.e. position determined on mobile

Definitions

  • the present invention relates generally to the field of positioning systems and more particularly to a remote tracking and sensing system and method.
  • the ability to track high value assets would greatly increase the efficiency of companies involved in using and transporting high value assets. In addition, the ability to track high value assets would significantly reduce the loss of high value assets.
  • the global positioning system and other satellite positioning systems have provided the promise of tracking high value assets.
  • a number of practical problems have limited the ability to track high value assets. For instance, one type of high value asset requiring tracking is heavy construction equipment. One problem in tracking heavy construction equipment is the drain any tracking system places on the equipment's battery. Commonly, these types of equipment require the battery to be at least 80% charged in order to start the equipment. Tracking system can seriously reduce the amount of battery power when the equipment is not running for an extended period of time. Another problem has been communicating the position information to a user. Construction equipment is often used in areas not served by cellular systems or by any other wireless system having modest power requirements.
  • the present tracking system for trains uses fixed locations to read a bar code on the train as the train passes the fixed location. Unfortunately, a train can stop for extended periods between these fixed locations. This leaves the system with little information about the train and leaves open the possibility that a fixed location failed to read the train as it passed.
  • FIG. 1 is a cartoon drawing of a heavy construction equipment capable of using the invention in accordance with one embodiment of the invention
  • FIG. 2 is a block diagram of a tracking and sensing system in accordance with one embodiment of the invention.
  • FIG. 3 is a schematic diagram of a power management system in accordance with one embodiment of the invention.
  • FIG. 4 is a flow chart of the steps used by a tracking and sensing system in accordance with one embodiment of the invention.
  • FIG. 5 is a cartoon drawing of a train system capable of using the invention in accordance with one embodiment of the invention.
  • FIG. 6 is a block diagram of a tracking and sensing system in accordance with one embodiment of the invention.
  • FIG. 7 is a flow chart of the steps used by a tracking and sensing system in accordance with one embodiment of the invention.
  • the present invention combines; a global positioning system (GPS) receiver, a processor and a communication interface to track high value assets.
  • GPS global positioning system
  • the GPS receiver provides information on the position of the high value asset.
  • the GPS receiver only determines the position (position signal), when a motion sensor indicates that the high value asset is moving.
  • the processor includes a virtual fence routine. The processor, using the position signal from the GPS receiver, determines if the high value asset has moved outside the virtual fence. When the high value asset is outside the virtual fence the processor sends a position message to the communication interface.
  • the virtual fence defines an area that the high value asset is not allowed to enter.
  • the processor when the high value asset enters the virtual fence (restricted area) the processor sends a position/alert message to the communication interface.
  • the communication interface is connected to at least two wireless communication systems. This system reduces the power consumption requirements by only determining the position of the high value asset when it is moved. In addition, the system has at least two wireless communication system options. This significantly reduces the areas where no coverage can be obtained.
  • FIG. 1 is a cartoon drawing of a heavy construction equipment 10 capable of using the invention in accordance with one embodiment of the invention.
  • a virtual fence 12 may be constructed around the bulldozer 10.
  • a virtual fence boundary is defined as a distance from a center point.
  • the virtual fence boundary might be defined a one kilometer square around the position of the bulldozer.
  • the invention builds a virtual fence around the bulldozer whenever the bulldozer is turned off.
  • the invention determines the time from the GPS signals.
  • the time is outside of "normal working hours"
  • the invention determines if the position determined from the GPS signals is outside the virtual fence.
  • a position signal (including an alert signal) is sent out over a communication system.
  • the time is within the "normal working hours"
  • the virtual fence is taken down. Note that the virtual fence is created by the invention on the bulldozer in this example and not determined remotely.
  • the virtual fence boundary is a set of latitude and longitude lines.
  • the invention constantly monitors the position, when the bulldozer is on or motion is sensed by the invention. When the position is outside of the virtual fence boundary, then the invention sends the position signal over a communication system.
  • FIG. 2 is a block diagram of a tracking and sensing system 20 in accordance with one embodiment of the invention.
  • a global positioning system receiver 22 sends a position signal and a time signal to a processor 24.
  • the GPS receiver determines both the position and time from the GPS satellite signals.
  • the processor 24 is connected to at least two wireless communication systems 26, 28 through a communication interface 30.
  • a power management system 32 provides power to the processor 24.
  • the power management system 32 is designed to reduce the amount of power consumed by the tracking and sensing system 20.
  • a power source 34 is connected to a switch 36.
  • the switch 36 is controlled by an output 38 of a motion sensor 40.
  • the processor 24 and the rest of the tracking system 20 receive power when the motion sensor 40 indicates motion. This significantly reduces the power consumption of the tracking system 20.
  • the motion sensor is a vibration sensor.
  • the motion sensor is an accelerometer.
  • the at least two wireless communication systems 26, 28 allows the system 20 to select the second communication system, when the first communication system is unable to transmit a position message. This significantly increases the areas where the tracking system 20 may be used and significantly increases the usefulness of the invention. Note that more than two communication systems may be used.
  • one of the wireless communication systems is a satellite communication system.
  • the system 20 includes a sensor interface connected to the processor 24. The sensor interface receives a sensor information from a sensor, such as revolutions per minute from a tachometer. The processor transmits the sensor information using the satellite communication system.
  • the processor 24 includes a virtual fence routine.
  • the virtual fence routine defines a boundary by a time and a location boundary. For instance, the time that the fence may be active is between 6:00 PM and 6:00 AM. If the fence is activated during this period, the location boundary might be a one kilometer square around an initial position. Note that, in one embodiment, the actual fence will be defined in terms of latitude and longitude and therefor will not be an exact square, rectangle or other polygon.
  • FIG. 3 is a schematic diagram of a power management system 50 in accordance with one embodiment of the invention.
  • a power supply 52 (e.g., a vehicle's battery) is connected to an input of an electronic switch 54.
  • a control input 56 of the electronic switch 54 is connected to the output of an OR gate 58.
  • the three inputs to the OR gate 58 are a motion sensor circuitry 60, an ignition sensor circuitry 62 and a processor feedback line 64.
  • the motion sensor 60 detects motion it pulls the OR gate 58 high, causing the electronic switch to connect the power supply 52 to the tracking and sensing system.
  • the ignition sensor 62 detects that the ignition system is on it pulls the OR gate 58 high, causing the electronic switch to connect the power supply 52 to the tracking and sensing system.
  • the processor feedback line 64 allows the processor to control the power for orderly shutdown and in the case where the tracking system detects a virtual fence has been breached. Once a virtual fence is breached the system sends out position messages continuously until a central system directs the tracking system to cease sending the position messages.
  • the position message includes a latitude and longitude, alert and addition information such as time, velocity and sensor values.
  • FIG. 4 is a flow chart of the steps used by a tracking and sensing system in accordance with one embodiment of the invention.
  • the process starts, step 80, by defining a boundary at step 82.
  • the remote tracking and sensing system is attached to a device at step 84.
  • a position of the device is determined at step 86.
  • a position message is sent over a wireless communication system which ends the process at step 90.
  • a signal strength for the wireless communication system is determined before the position message is sent.
  • the signal strength is measured by a receiving station and this information is returned to the tracking system.
  • the tracking system switches to a second wireless communication system and sends the position message.
  • a predetermined signal strength e.g. 3 dB
  • other indicators may be used to determine that a wireless communication system is unavailable. For instances, messages in form a receiving station may indicate that the user is not allowed access to the communication system.
  • the boundary is defined as a maximum distance from an initial position that the device can travel.
  • a is defined during which the boundary is active. As a result the device sets a boundary around where ever it is left at the end of the day.
  • an ignition sensor is attached to the ignition system of the device. When the ignition sensor indicates that the ignition system is on, the position of the device is determined.
  • FIG. 5 is a cartoon drawing of a train system 100 capable of using the invention in accordance with one embodiment of the invention.
  • a pair of trains 102, 104 are shown in communication with a central traffic control system 106.
  • the central traffic control system 106 is connected to a traffic control signal system 108.
  • Each of the pair of trains has a block 110, 112 that is determined based on the position of the train 102, 104.
  • These moving blocks are then used by the central traffic control system 106 to adjust the traffic control signal system 108 or result in traffic control signals sent directly to the trains.
  • FIG. 6 is a block diagram of a tracking and sensing system 120 in accordance with one embodiment of the invention.
  • a global positioning system (GPS) receiver 122 sends a position signal to a processor 124.
  • the processor determines a block based on the position signal and a vehicle information.
  • the vehicle information can include but is not limited to the size and weight of the vehicle, or the type of cargo the vehicle is carrying.
  • a communication interface 126 links the processor 124 to a communication system 128.
  • a sensor interface 130 connects the processor 124 to a sensor.
  • a number of different types of sensors can be connected to the sensor interface 130, such as speedometers, temperature sensors, pressure sensors, etc. This sensor data may then be sent over the communication system 128 to a central traffic control system.
  • the central traffic control system also receives the block.
  • the position signal is sent periodically to the processor and the block is updated each time the position signal is sent.
  • the block is a zone defined around a train, for example, that is used for traffic control purposes.
  • the central control system monitors a plurality of blocks from a plurality of vehicles.
  • the central control system transmits a traffic control information when one of the plurality of vehicles exceeds a vehicle dynamic parameter. For instance, a gate at a railroad crossing may not be working and a train's block is within a predetermined distance of the gate.
  • the central system may send a signal for the train to stop or slow down. Another example is when two trains are using the same set of tracks. One of the trains may be ordered to stop at a side rail, when its block approaches the side rail.
  • FIG. 7 is a flow chart of the steps used by a tracking and sensing system in accordance with one embodiment of the invention.
  • the process starts, step 140, by attaching a position sensing system to a vehicle at step 142.
  • the position of the vehicle is determined periodically at step 144.
  • the position is transmitted to a central traffic control system at regular intervals at step 146.
  • a vehicle block is calculated based on the position information at step 148.
  • the traffic control information from the central traffic control system is communicated to the vehicle which ends the process at step 152.
  • the traffic control information is transmitted to a traffic control signal system.
  • the fence can be an exclusionary area.
  • the high value asset cannot enter the fenced off area.
  • the system sends out an alert.
  • the system described above power is saved so that a vehicle's battery is not drained.
  • the system also provides, in one embodiment, multiple communication paths to overcome the problem of dead spots.
  • the system allows moving blocks that provide block information on a regular basis.
  • the methods described herein can be implemented as computer-readable instructions stored on a computer-readable storage medium that when executed by a computer will perform the methods described herein.

Abstract

A remote tracking and sensing device (20) includes a global positioning system receiver (22). A processor (24) receives a position signal from the global positioning system receiver (22). A communication interface (30) connects the processor (24) to at least two wireless communication systems (26, 28). A power management system (32) provides power to the processor (24) based on an output (38) from a motion sensor (40).

Description

FIELD OF THE INVENTION
The present invention relates generally to the field of positioning systems and more particularly to a remote tracking and sensing system and method.
BACKGROUND OF THE INVENTION
The ability to track high value assets would greatly increase the efficiency of companies involved in using and transporting high value assets. In addition, the ability to track high value assets would significantly reduce the loss of high value assets. The global positioning system and other satellite positioning systems have provided the promise of tracking high value assets. Unfortunately, a number of practical problems have limited the ability to track high value assets. For instance, one type of high value asset requiring tracking is heavy construction equipment. One problem in tracking heavy construction equipment is the drain any tracking system places on the equipment's battery. Commonly, these types of equipment require the battery to be at least 80% charged in order to start the equipment. Tracking system can seriously reduce the amount of battery power when the equipment is not running for an extended period of time. Another problem has been communicating the position information to a user. Construction equipment is often used in areas not served by cellular systems or by any other wireless system having modest power requirements.
Another high value asset requiring tracking is trains. The present tracking system for trains uses fixed locations to read a bar code on the train as the train passes the fixed location. Unfortunately, a train can stop for extended periods between these fixed locations. This leaves the system with little information about the train and leaves open the possibility that a fixed location failed to read the train as it passed.
Thus there exists a need for a system that can track high value assets, without draining the equipment's battery and can transmit the position information reliably anywhere.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a cartoon drawing of a heavy construction equipment capable of using the invention in accordance with one embodiment of the invention;
FIG. 2 is a block diagram of a tracking and sensing system in accordance with one embodiment of the invention;
FIG. 3 is a schematic diagram of a power management system in accordance with one embodiment of the invention;
FIG. 4 is a flow chart of the steps used by a tracking and sensing system in accordance with one embodiment of the invention;
FIG. 5 is a cartoon drawing of a train system capable of using the invention in accordance with one embodiment of the invention;
FIG. 6 is a block diagram of a tracking and sensing system in accordance with one embodiment of the invention; and
FIG. 7 is a flow chart of the steps used by a tracking and sensing system in accordance with one embodiment of the invention.
DETAILED DESCRIPTION OF THE DRAWINGS
The present invention combines; a global positioning system (GPS) receiver, a processor and a communication interface to track high value assets. The GPS receiver provides information on the position of the high value asset. In one embodiment the GPS receiver only determines the position (position signal), when a motion sensor indicates that the high value asset is moving. In another embodiment, the processor includes a virtual fence routine. The processor, using the position signal from the GPS receiver, determines if the high value asset has moved outside the virtual fence. When the high value asset is outside the virtual fence the processor sends a position message to the communication interface. In another embodiment, the virtual fence defines an area that the high value asset is not allowed to enter. In this case, when the high value asset enters the virtual fence (restricted area) the processor sends a position/alert message to the communication interface. The communication interface is connected to at least two wireless communication systems. This system reduces the power consumption requirements by only determining the position of the high value asset when it is moved. In addition, the system has at least two wireless communication system options. This significantly reduces the areas where no coverage can be obtained.
FIG. 1 is a cartoon drawing of a heavy construction equipment 10 capable of using the invention in accordance with one embodiment of the invention. When the bulldozer 10 is equipped with the invention, a virtual fence 12 may be constructed around the bulldozer 10. In one embodiment, a virtual fence boundary is defined as a distance from a center point. For instance, the virtual fence boundary might be defined a one kilometer square around the position of the bulldozer. The invention builds a virtual fence around the bulldozer whenever the bulldozer is turned off. When the bulldozer is turned on or the invention senses motion, the invention determines the time from the GPS signals. When the time is outside of "normal working hours", then the invention determines if the position determined from the GPS signals is outside the virtual fence. If the position is outside the virtual fence, then a position signal (including an alert signal) is sent out over a communication system. When the time is within the "normal working hours", then the virtual fence is taken down. Note that the virtual fence is created by the invention on the bulldozer in this example and not determined remotely.
In another embodiment, the virtual fence boundary is a set of latitude and longitude lines. The invention constantly monitors the position, when the bulldozer is on or motion is sensed by the invention. When the position is outside of the virtual fence boundary, then the invention sends the position signal over a communication system.
FIG. 2 is a block diagram of a tracking and sensing system 20 in accordance with one embodiment of the invention. A global positioning system receiver 22 sends a position signal and a time signal to a processor 24. The GPS receiver determines both the position and time from the GPS satellite signals. The processor 24 is connected to at least two wireless communication systems 26, 28 through a communication interface 30. A power management system 32 provides power to the processor 24. The power management system 32 is designed to reduce the amount of power consumed by the tracking and sensing system 20. A power source 34 is connected to a switch 36. The switch 36 is controlled by an output 38 of a motion sensor 40. As a result, the processor 24 and the rest of the tracking system 20 receive power when the motion sensor 40 indicates motion. This significantly reduces the power consumption of the tracking system 20. In one embodiment the motion sensor is a vibration sensor. In another embodiment, the motion sensor is an accelerometer.
The at least two wireless communication systems 26, 28 allows the system 20 to select the second communication system, when the first communication system is unable to transmit a position message. This significantly increases the areas where the tracking system 20 may be used and significantly increases the usefulness of the invention. Note that more than two communication systems may be used. In one embodiment, one of the wireless communication systems is a satellite communication system. In another embodiment, the system 20 includes a sensor interface connected to the processor 24. The sensor interface receives a sensor information from a sensor, such as revolutions per minute from a tachometer. The processor transmits the sensor information using the satellite communication system.
In another embodiment the processor 24 includes a virtual fence routine. The virtual fence routine defines a boundary by a time and a location boundary. For instance, the time that the fence may be active is between 6:00 PM and 6:00 AM. If the fence is activated during this period, the location boundary might be a one kilometer square around an initial position. Note that, in one embodiment, the actual fence will be defined in terms of latitude and longitude and therefor will not be an exact square, rectangle or other polygon.
FIG. 3 is a schematic diagram of a power management system 50 in accordance with one embodiment of the invention. A power supply 52 (e.g., a vehicle's battery) is connected to an input of an electronic switch 54. A control input 56 of the electronic switch 54 is connected to the output of an OR gate 58. The three inputs to the OR gate 58 are a motion sensor circuitry 60, an ignition sensor circuitry 62 and a processor feedback line 64. When the motion sensor 60 detects motion it pulls the OR gate 58 high, causing the electronic switch to connect the power supply 52 to the tracking and sensing system. When the ignition sensor 62 detects that the ignition system is on it pulls the OR gate 58 high, causing the electronic switch to connect the power supply 52 to the tracking and sensing system. The processor feedback line 64 allows the processor to control the power for orderly shutdown and in the case where the tracking system detects a virtual fence has been breached. Once a virtual fence is breached the system sends out position messages continuously until a central system directs the tracking system to cease sending the position messages. The position message includes a latitude and longitude, alert and addition information such as time, velocity and sensor values.
FIG. 4 is a flow chart of the steps used by a tracking and sensing system in accordance with one embodiment of the invention. The process starts, step 80, by defining a boundary at step 82. The remote tracking and sensing system is attached to a device at step 84. When a motion sensor indicates that the device is moving, a position of the device is determined at step 86. When the device is outside the boundary at step 88, a position message is sent over a wireless communication system which ends the process at step 90.
In one embodiment, before the position message is sent, a signal strength for the wireless communication system is determined. The signal strength is measured by a receiving station and this information is returned to the tracking system. When the signal strength is less than a predetermined signal strength (e.g., 3 dB), the tracking system switches to a second wireless communication system and sends the position message. In another embodiment, other indicators may be used to determine that a wireless communication system is unavailable. For instances, messages in form a receiving station may indicate that the user is not allowed access to the communication system.
In another embodiment, the boundary is defined as a maximum distance from an initial position that the device can travel. In addition, a is defined during which the boundary is active. As a result the device sets a boundary around where ever it is left at the end of the day.
In another embodiment, an ignition sensor is attached to the ignition system of the device. When the ignition sensor indicates that the ignition system is on, the position of the device is determined.
FIG. 5 is a cartoon drawing of a train system 100 capable of using the invention in accordance with one embodiment of the invention. A pair of trains 102, 104 are shown in communication with a central traffic control system 106. The central traffic control system 106 is connected to a traffic control signal system 108. Each of the pair of trains has a block 110, 112 that is determined based on the position of the train 102, 104. These moving blocks are then used by the central traffic control system 106 to adjust the traffic control signal system 108 or result in traffic control signals sent directly to the trains.
FIG. 6 is a block diagram of a tracking and sensing system 120 in accordance with one embodiment of the invention. A global positioning system (GPS) receiver 122 sends a position signal to a processor 124. The processor determines a block based on the position signal and a vehicle information. The vehicle information can include but is not limited to the size and weight of the vehicle, or the type of cargo the vehicle is carrying. A communication interface 126 links the processor 124 to a communication system 128. A sensor interface 130 connects the processor 124 to a sensor. A number of different types of sensors can be connected to the sensor interface 130, such as speedometers, temperature sensors, pressure sensors, etc. This sensor data may then be sent over the communication system 128 to a central traffic control system. The central traffic control system also receives the block.
In one embodiment the position signal is sent periodically to the processor and the block is updated each time the position signal is sent. The block is a zone defined around a train, for example, that is used for traffic control purposes. The central control system monitors a plurality of blocks from a plurality of vehicles. The central control system transmits a traffic control information when one of the plurality of vehicles exceeds a vehicle dynamic parameter. For instance, a gate at a railroad crossing may not be working and a train's block is within a predetermined distance of the gate. The central system may send a signal for the train to stop or slow down. Another example is when two trains are using the same set of tracks. One of the trains may be ordered to stop at a side rail, when its block approaches the side rail.
FIG. 7 is a flow chart of the steps used by a tracking and sensing system in accordance with one embodiment of the invention. The process starts, step 140, by attaching a position sensing system to a vehicle at step 142. The position of the vehicle is determined periodically at step 144. The position is transmitted to a central traffic control system at regular intervals at step 146. A vehicle block is calculated based on the position information at step 148. At step 150, the traffic control information from the central traffic control system is communicated to the vehicle which ends the process at step 152. In another embodiment the traffic control information is transmitted to a traffic control signal system.
Note that while the invention has been described with the high value asset inside the virtual fence, the fence can be an exclusionary area. In this case the high value asset cannot enter the fenced off area. When the high value asset enters the fenced off area, the system sends out an alert.
Using the system described above power is saved so that a vehicle's battery is not drained. The system also provides, in one embodiment, multiple communication paths to overcome the problem of dead spots. In addition, the system allows moving blocks that provide block information on a regular basis.
The methods described herein can be implemented as computer-readable instructions stored on a computer-readable storage medium that when executed by a computer will perform the methods described herein.
While the invention has been described in conjunction with specific embodiments thereof, it is evident that many alterations, modifications, and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alterations, modifications, and variations in the appended claims.

Claims (22)

What is claimed is:
1. A remote tracking and sensing device, comprising:
a global positioning system receiver;
a processor receiving a position signal from the global positioning system receiver;
a communication interface connecting the processor to at least two wireless communication systems, the at least two wireless communication systems designed to transmit the position signal; and
a power management system providing power to the processor based on an output from a motion sensor.
2. The remote tracking and sensing system of claim 1, wherein the motion sensor is a vibration sensor.
3. The remote tracking and sensing system of claim 1, wherein the motion sensor is an accelerometer.
4. The remote tracking and sensing system of claim 1, wherein the power management system includes an electronic switch that is controlled by an ignition sensor.
5. The remote tracking and sensing system of claim 1, wherein the processor selects a second of the at least two wireless communication systems, when the first of the at least two wireless communication systems is unable to transmit a message.
6. The remote tracking and sensing system of claim 5, wherein one of the at least two wireless communication systems is a satellite communication system.
7. The remote tracking and sensing system of claim 6, further including a sensor interface connected to the processor, the sensor interface receiving a sensor information and transmitting the sensor information over the satellite communication system.
8. The remote tracking and sensing system of claim 1, wherein the processor includes a virtual fence routine.
9. The remote tracking and sensing system of claim 8, wherein the virtual fence routine defines a boundary by a time and a location boundary.
10. The remote tracking and sensing system of claim 9, wherein the processor sends a position message over one of the at least two wireless communication when the remote tracking and sensing system breaks the boundary.
11. A method of operating a remote tracking and sensing system, comprising the steps of:
(a) attaching the remote tracking and sensing system to a device;
(b) determining a boundary when a device is turned off;
(c) when a motion sensor indicates that the device is moving, determining a position of the device; and
(d) when the device is outside of the boundary, sending a position message over a wireless communication system.
12. The method of claim 11, wherein step (d) further includes the step of:
(d1) determining a received signal strength for the wireless communication system;
(d2) when the received signal strength is less than a predetermined signal strength, switching to a second wireless communication system and sending the position message.
13. The method of claim 11, wherein step (b) includes the steps of:
(b1) defining a maximum distance from an initial position the device can travel;
(b2) defining a time period during which the boundary is active.
14. The method of claim 11, wherein step (a) further includes the step of attaching an ignition sensor to an ignition system of the device.
15. The method of claim 14, wherein step (c) further includes the step of:
(c1) when the ignition sensor indicates that the ignition system is on, determining a position of the device.
16. A tracking and traffic control system, comprising:
a global positioning system receiver;
a processor receiving a position signal from the global positioning system receiver, the processor determining a block based on the position signal and a vehicle information, wherein the position signal is sent periodically and the block is updated each time the position signal is determined;
a communication interface linking the processor to a communication system; and
a central control system receiving the block over the communication system.
17. The tracking and traffic control system of claim 16, wherein the central control system monitors a plurality of blocks from a plurality of vehicles.
18. The tracking and traffic control system of claim 17, wherein the central control system transmits a traffic control information when one of the plurality of vehicles exceeds a vehicle dynamic parameter specification.
19. The tracking and traffic control system of claim 18, wherein the traffic control information is sent to a traffic control signal system.
20. A method of operating a tracking and traffic control system, comprising the steps of:
(a) attaching a position sensing system to a vehicle;
(b) determining a position of the vehicle periodically;
(c) transmitting the position, at regular time intervals, to a central traffic control system;
(d) calculating a vehicle block based on the position information; and
(e) communicating a traffic control information from the central traffic control system to the vehicle.
21. The method of claim 20, wherein step (e) includes the step of:
(e1) transmitting the traffic control information to a traffic control signal system.
22. The method of claim 20, wherein the step of determining the position includes the step of using a global positioning system receiver to determine the position.
US09/157,475 1998-09-21 1998-09-21 Remote tracking and sensing system and method Expired - Fee Related US6067044A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US09/157,475 US6067044A (en) 1998-09-21 1998-09-21 Remote tracking and sensing system and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/157,475 US6067044A (en) 1998-09-21 1998-09-21 Remote tracking and sensing system and method

Publications (1)

Publication Number Publication Date
US6067044A true US6067044A (en) 2000-05-23

Family

ID=22563898

Family Applications (1)

Application Number Title Priority Date Filing Date
US09/157,475 Expired - Fee Related US6067044A (en) 1998-09-21 1998-09-21 Remote tracking and sensing system and method

Country Status (1)

Country Link
US (1) US6067044A (en)

Cited By (81)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6342847B1 (en) 2000-09-28 2002-01-29 National Systems & Research Co. Virtual fence system and method
US20020177476A1 (en) * 2001-05-22 2002-11-28 Chou Y. Hong Durable global asset-tracking device and a method of using the same
US20020181446A1 (en) * 1998-05-19 2002-12-05 Preston Dan A. Synchronizer for use with improved in-band signaling for data communications over digital wireless telecommunications networks
US20030050038A1 (en) * 2001-08-17 2003-03-13 Luther Haave Method and system for asset tracking
US20030060212A1 (en) * 2000-02-28 2003-03-27 Invention Depot, Inc. Method and system for location tracking
GB2383216A (en) * 2001-12-14 2003-06-18 Nokia Corp Location of Mobile Devices
US6581546B1 (en) 2002-02-14 2003-06-24 Waters Instruments, Inc. Animal containment system having a dynamically changing perimeter
WO2003060544A2 (en) * 2000-12-30 2003-07-24 Mundi Fomukong Method and apparatus for locating mobile units tracking another
WO2003025618A3 (en) * 2001-09-14 2003-08-14 Sirf Tech Inc Advanced power management for satellite positioning system
US6614349B1 (en) 1999-12-03 2003-09-02 Airbiquity Inc. Facility and method for tracking physical assets
US20040019577A1 (en) * 2001-05-30 2004-01-29 Abdel-Malek Aiman Albert System and method for monitoring the condition of a vehicle
US6774838B2 (en) * 2002-12-27 2004-08-10 Kinpo Electronics, Inc. Power saving device and method for GPS receiver
JP2004236306A (en) * 2003-01-10 2004-08-19 Stmicroelectronics Inc Electronic apparatus including kinetic sensitivity power switching integrated circuit and method relating thereto
US20040177352A1 (en) * 2003-03-03 2004-09-09 Narayanaswamy Sreedhara Srinivasulu Universal deployment tool
US20040192386A1 (en) * 2003-03-26 2004-09-30 Naveen Aerrabotu Method and apparatus for multiple subscriber identities in a mobile communication device
WO2004097447A1 (en) * 2003-04-29 2004-11-11 Telenor Asa A system and a method for managing the power consumption of a tracking device
US20040249534A1 (en) * 2002-04-12 2004-12-09 Kunihiro Yamada Power supply management system for vehicle mounted apparatus
US20050017855A1 (en) * 2003-07-25 2005-01-27 John Harvey System for providing a virtual vehicle boundary
US20050174235A1 (en) * 2002-05-07 2005-08-11 Davis Brian J. Tracking system and assosciated method
US20050234982A1 (en) * 2002-10-10 2005-10-20 Clifford Yamamoto Layered host based satellite positioning solutions
US20050240345A1 (en) * 2002-10-10 2005-10-27 Clifford Yamamoto Host based satellite positioning systems
US6975941B1 (en) 2002-04-24 2005-12-13 Chung Lau Method and apparatus for intelligent acquisition of position information
US20060106537A1 (en) * 1999-12-29 2006-05-18 Bellsouth Intellectual Property Corporation G.P.S. management system
US20060119508A1 (en) * 2004-11-19 2006-06-08 Miller John D Method and apparatus for conserving power on a mobile device through motion awareness
US20060232465A1 (en) * 2005-04-04 2006-10-19 Levin Lon C Radioterminals and associated operating methods that alternate transmission of wireless communications and processing of global positioning system signals
US20060238417A1 (en) * 2005-04-26 2006-10-26 Magnus Jendbro Portable electronic devices, methods and computer program products using activity-triggered GPS updates
US20060259241A1 (en) * 2005-04-07 2006-11-16 Tomas Nylen Mobile device
EP1776688A2 (en) * 2004-03-19 2007-04-25 Arbitron Inc. Gathering data concerning publication usage
US7212829B1 (en) 2000-02-28 2007-05-01 Chung Lau Method and system for providing shipment tracking and notifications
US7218938B1 (en) 2002-04-24 2007-05-15 Chung Lau Methods and apparatus to analyze and present location information
EP1808708A2 (en) * 2006-01-11 2007-07-18 Kinpo Electronics Inc. Power saving device for GPS device
US20070189215A1 (en) * 2004-01-07 2007-08-16 Huawei Technologies Co., Ltd. Method for reducing interface load of home subscriber server
US20070239321A1 (en) * 2006-04-11 2007-10-11 Mcaden Mark Method and apparatus for power management of asset tracking system
US20080012693A1 (en) * 2006-07-11 2008-01-17 Denso Corporation Vehicle communication system
US7321774B1 (en) 2002-04-24 2008-01-22 Ipventure, Inc. Inexpensive position sensing device
US20080022940A1 (en) * 2003-07-11 2008-01-31 Bradley Kirsch Composite Absorbent Particles with Superabsorbent Material
US20080108389A1 (en) * 1997-05-19 2008-05-08 Airbiquity Inc Method for in-band signaling of data over digital wireless telecommunications networks
EP1931536A2 (en) * 2005-09-12 2008-06-18 Skybitz, Inc. System and method for reporting a status of an asset
US7403972B1 (en) 2002-04-24 2008-07-22 Ip Venture, Inc. Method and system for enhanced messaging
FR2915343A1 (en) * 2007-04-20 2008-10-24 Wavecom Sa METHOD AND DEVICE FOR TRACKING, COMPUTER PROGRAM PRODUCT, STROKING METHOD AND CORRESPONDING RADIOCOMMUNICATION MODULE.
US20080300786A1 (en) * 2007-05-29 2008-12-04 Daniel Ezra Greenberg System and method for tracking media
US20090121902A1 (en) * 2005-09-12 2009-05-14 Rich Battista System and method for adaptive motion sensing with location determination
US20090135027A1 (en) * 2005-09-12 2009-05-28 Rich Battista System and method for reporting a status of an asset
US7733853B2 (en) 2005-01-31 2010-06-08 Airbiquity, Inc. Voice channel control of wireless packet data communications
US20100148961A1 (en) * 2007-03-29 2010-06-17 Sandlinks Systems Ltd. Active virtual fence using mesh networked rf tags
EP2226778A1 (en) * 2007-12-24 2010-09-08 Caterpillar, Inc. A saving power system and method for managing communication of a moving object
US7848763B2 (en) 2001-11-01 2010-12-07 Airbiquity Inc. Method for pulling geographic location data from a remote wireless telecommunications mobile unit
US7924934B2 (en) 2006-04-07 2011-04-12 Airbiquity, Inc. Time diversity voice channel data communications
US7979095B2 (en) 2007-10-20 2011-07-12 Airbiquity, Inc. Wireless in-band signaling with in-vehicle systems
US7983310B2 (en) 2008-09-15 2011-07-19 Airbiquity Inc. Methods for in-band signaling through enhanced variable-rate codecs
US8036600B2 (en) 2009-04-27 2011-10-11 Airbiquity, Inc. Using a bluetooth capable mobile phone to access a remote network
US20110307141A1 (en) * 2010-06-14 2011-12-15 On-Board Communications, Inc. System and method for determining equipment utilization
US8239169B2 (en) 2009-09-25 2012-08-07 Gregory Timothy L Portable computing device and method for asset management in a logistics system
US8249865B2 (en) 2009-11-23 2012-08-21 Airbiquity Inc. Adaptive data transmission for a digital in-band modem operating over a voice channel
US8299920B2 (en) 2009-09-25 2012-10-30 Fedex Corporate Services, Inc. Sensor based logistics system
US8418039B2 (en) 2009-08-03 2013-04-09 Airbiquity Inc. Efficient error correction scheme for data transmission in a wireless in-band signaling system
US20130227061A1 (en) * 2012-02-15 2013-08-29 Bing Liu Engine, system and method of providing location-based social services
US8532670B2 (en) 2010-06-02 2013-09-10 Deutsche Telekom Ag Apparatus, method, and system for sensing suppression for location-based applications
WO2013163135A1 (en) * 2012-04-24 2013-10-31 Analog Devices, Inc. Accelerometer-controlled master power switch for electronic devices
US8594138B2 (en) 2008-09-15 2013-11-26 Airbiquity Inc. Methods for in-band signaling through enhanced variable-rate codecs
US8848825B2 (en) 2011-09-22 2014-09-30 Airbiquity Inc. Echo cancellation in wireless inband signaling modem
US20150070169A1 (en) * 2013-09-12 2015-03-12 Alistair Ross-Mowat Personal Possession Alarm
US9049571B2 (en) 2002-04-24 2015-06-02 Ipventure, Inc. Method and system for enhanced messaging
US9182238B2 (en) 2002-04-24 2015-11-10 Ipventure, Inc. Method and apparatus for intelligent acquisition of position information
US9305406B2 (en) 2011-08-01 2016-04-05 Divelbiss Corporation and Kokosing Construction Co., Inc. Asset monitoring and fueling system
US9316737B2 (en) 2012-11-05 2016-04-19 Spireon, Inc. Container verification through an electrical receptacle and plug associated with a container and a transport vehicle of an intermodal freight transport system
US9355381B2 (en) 2012-06-01 2016-05-31 Senaya, Inc. Asset tracking system with adjusted ping rate and ping period
US9402160B2 (en) 2012-12-31 2016-07-26 Senaya, Inc. Methodology to extend battery power in asset-tracking device
US9551788B2 (en) 2015-03-24 2017-01-24 Jim Epler Fleet pan to provide measurement and location of a stored transport item while maximizing space in an interior cavity of a trailer
US9633327B2 (en) 2009-09-25 2017-04-25 Fedex Corporate Services, Inc. Sensor zone management
US9779379B2 (en) 2012-11-05 2017-10-03 Spireon, Inc. Container verification through an electrical receptacle and plug associated with a container and a transport vehicle of an intermodal freight transport system
US9779449B2 (en) 2013-08-30 2017-10-03 Spireon, Inc. Veracity determination through comparison of a geospatial location of a vehicle with a provided data
US9784583B2 (en) 2005-09-12 2017-10-10 Skybitz, Inc. System and method for reporting a status of an asset
US10139472B2 (en) * 2005-05-10 2018-11-27 Zih Corp. Extensible object location system and method using multiple references
US10169822B2 (en) 2011-12-02 2019-01-01 Spireon, Inc. Insurance rate optimization through driver behavior monitoring
US10223744B2 (en) 2013-12-31 2019-03-05 Spireon, Inc. Location and event capture circuitry to facilitate remote vehicle location predictive modeling when global positioning is unavailable
US10255824B2 (en) 2011-12-02 2019-04-09 Spireon, Inc. Geospatial data based assessment of driver behavior
US10403104B2 (en) * 2017-08-17 2019-09-03 Vivek KANGRALKAR System and method for tracking of deployed units
US20200177221A1 (en) * 2018-12-04 2020-06-04 The United States Of America As Represented By Secretary Of The Navy Submerged Maritime Tag Track and Locate Device and System
US10713642B2 (en) 2016-08-05 2020-07-14 Denso International America, Inc. System and method for selecting a parking space using a mobile device
US20210173035A1 (en) * 2019-12-10 2021-06-10 Orange Method for Locating a Geolocation Beacon

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5223844A (en) * 1992-04-17 1993-06-29 Auto-Trac, Inc. Vehicle tracking and security system
US5491486A (en) * 1994-04-25 1996-02-13 General Electric Company Mobile tracking units employing motion sensors for reducing power consumption therein
US5504482A (en) * 1993-06-11 1996-04-02 Rockwell International Corporation Automobile navigation guidance, control and safety system
US5550551A (en) * 1994-07-25 1996-08-27 At&T Corp. Position monitoring system and method
US5579013A (en) * 1994-05-05 1996-11-26 General Electric Company Mobile tracking unit capable of detecting defective conditions in railway vehicle wheels and railtracks
US5731757A (en) * 1996-08-19 1998-03-24 Pro Tech Monitoring, Inc. Portable tracking apparatus for continuous position determination of criminal offenders and victims

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5223844A (en) * 1992-04-17 1993-06-29 Auto-Trac, Inc. Vehicle tracking and security system
US5223844B1 (en) * 1992-04-17 2000-01-25 Auto Trac Inc Vehicle tracking and security system
US5504482A (en) * 1993-06-11 1996-04-02 Rockwell International Corporation Automobile navigation guidance, control and safety system
US5491486A (en) * 1994-04-25 1996-02-13 General Electric Company Mobile tracking units employing motion sensors for reducing power consumption therein
US5579013A (en) * 1994-05-05 1996-11-26 General Electric Company Mobile tracking unit capable of detecting defective conditions in railway vehicle wheels and railtracks
US5550551A (en) * 1994-07-25 1996-08-27 At&T Corp. Position monitoring system and method
US5731757A (en) * 1996-08-19 1998-03-24 Pro Tech Monitoring, Inc. Portable tracking apparatus for continuous position determination of criminal offenders and victims

Cited By (225)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7747281B2 (en) 1997-05-19 2010-06-29 Airbiquity Inc. Method for in-band signaling of data over digital wireless telecommunications networks
US20080108389A1 (en) * 1997-05-19 2008-05-08 Airbiquity Inc Method for in-band signaling of data over digital wireless telecommunications networks
US20020181446A1 (en) * 1998-05-19 2002-12-05 Preston Dan A. Synchronizer for use with improved in-band signaling for data communications over digital wireless telecommunications networks
US20080056469A1 (en) * 1998-05-19 2008-03-06 Airbiquity Inc. In-band signaling for data communications over digital wireless telecommunications networks
US8068792B2 (en) 1998-05-19 2011-11-29 Airbiquity Inc. In-band signaling for data communications over digital wireless telecommunications networks
US6614349B1 (en) 1999-12-03 2003-09-02 Airbiquity Inc. Facility and method for tracking physical assets
US7460954B2 (en) 1999-12-29 2008-12-02 At&T Mobility Ii Llc G. P. S. management system
US20060253252A1 (en) * 1999-12-29 2006-11-09 Bellsouth Intellectual Property Corporation G. P. S. management system
US8725344B2 (en) 1999-12-29 2014-05-13 At&T Intellectual Property I, L.P. G.P.S. management system
US20060106537A1 (en) * 1999-12-29 2006-05-18 Bellsouth Intellectual Property Corporation G.P.S. management system
US8781645B2 (en) 1999-12-29 2014-07-15 At&T Intellectual Property I, L.P. Apparatus, systems, and methods for processing alerts relating to an in-vehicle control unit
US7577525B2 (en) 1999-12-29 2009-08-18 At&T Intellectual Property I, L.P. G.P.S. management system
US20090276116A1 (en) * 1999-12-29 2009-11-05 Hamrick Marvin R G.p.s. management system
US9652973B2 (en) 1999-12-29 2017-05-16 At&T Intellectual Property I, L.P. Apparatus, systems, and methods for processing alerts relating to an in-vehicle control unit
US8478453B2 (en) 1999-12-29 2013-07-02 At&T Intellectual Property I, L.P. Apparatus, systems, and methods for processing alerts relating to an in-vehicle control unit
US9734698B2 (en) 1999-12-29 2017-08-15 At&T Intellectual Property I, L.P. G.P.S. management system
US7725218B2 (en) 1999-12-29 2010-05-25 At&T Intellectual Property I, L.P. G.P.S. management system
US8301158B1 (en) 2000-02-28 2012-10-30 Ipventure, Inc. Method and system for location tracking
US11330419B2 (en) 2000-02-28 2022-05-10 Ipventure, Inc. Method and system for authorized location monitoring
US20080021645A1 (en) * 2000-02-28 2008-01-24 Chung Lau Methods and apparatus to analyze and present location information
US8886220B2 (en) 2000-02-28 2014-11-11 Ipventure, Inc. Method and apparatus for location identification
US8868103B2 (en) 2000-02-28 2014-10-21 Ipventure, Inc. Method and system for authorized location monitoring
US9723442B2 (en) 2000-02-28 2017-08-01 Ipventure, Inc. Method and apparatus for identifying and presenting location and location-related information
US7809377B1 (en) 2000-02-28 2010-10-05 Ipventure, Inc Method and system for providing shipment tracking and notifications
US7366522B2 (en) 2000-02-28 2008-04-29 Thomas C Douglass Method and system for location tracking
US20030060212A1 (en) * 2000-02-28 2003-03-27 Invention Depot, Inc. Method and system for location tracking
US10827298B2 (en) 2000-02-28 2020-11-03 Ipventure, Inc. Method and apparatus for location identification and presentation
US7212829B1 (en) 2000-02-28 2007-05-01 Chung Lau Method and system for providing shipment tracking and notifications
US9219988B2 (en) 2000-02-28 2015-12-22 Ipventure, Inc. Method and apparatus for location identification and presentation
US10652690B2 (en) 2000-02-28 2020-05-12 Ipventure, Inc. Method and apparatus for identifying and presenting location and location-related information
US10628783B2 (en) 2000-02-28 2020-04-21 Ipventure, Inc. Method and system for providing shipment tracking and notifications
US10873828B2 (en) 2000-02-28 2020-12-22 Ipventure, Inc. Method and apparatus identifying and presenting location and location-related information
US8611920B2 (en) 2000-02-28 2013-12-17 Ipventure, Inc. Method and apparatus for location identification
US20110022533A1 (en) * 2000-02-28 2011-01-27 Chung Lau Method and system for providing shipment tracking and notifications
US8725165B2 (en) 2000-02-28 2014-05-13 Ipventure, Inc. Method and system for providing shipment tracking and notifications
US10609516B2 (en) 2000-02-28 2020-03-31 Ipventure, Inc. Authorized location monitoring and notifications therefor
US8700050B1 (en) 2000-02-28 2014-04-15 Ipventure, Inc. Method and system for authorizing location monitoring
US6342847B1 (en) 2000-09-28 2002-01-29 National Systems & Research Co. Virtual fence system and method
WO2003060544A3 (en) * 2000-12-30 2003-10-09 Mundi Fomukong Method and apparatus for locating mobile units tracking another
AU2002249899B2 (en) * 2000-12-30 2007-11-08 Fomukong, Mundi Mr Method and apparatus for locating mobile units tracking another
WO2003060544A2 (en) * 2000-12-30 2003-07-24 Mundi Fomukong Method and apparatus for locating mobile units tracking another
US20040246146A1 (en) * 2000-12-30 2004-12-09 Mundi Fomukong Method and apparatus for locating mobile units tracking another or within a prescribed geographic boundary
US7199726B2 (en) 2000-12-30 2007-04-03 Mundi Fomukong Method and apparatus for locating mobile units tracking another or within a prescribed geographic boundary
US7072668B2 (en) * 2001-05-22 2006-07-04 Geospatial Technologies, Inc. Durable global asset-tracking device and a method of using the same
US20020177476A1 (en) * 2001-05-22 2002-11-28 Chou Y. Hong Durable global asset-tracking device and a method of using the same
US20040019577A1 (en) * 2001-05-30 2004-01-29 Abdel-Malek Aiman Albert System and method for monitoring the condition of a vehicle
US6985803B2 (en) * 2001-05-30 2006-01-10 General Electric Company System and method for monitoring the condition of a vehicle
US7171187B2 (en) 2001-08-17 2007-01-30 Longview Advantage, Inc Method and system for asset tracking
US20070026842A1 (en) * 2001-08-17 2007-02-01 Longview Advantage, Inc. Method of configuring a tracking device
US20070021100A1 (en) * 2001-08-17 2007-01-25 Longview Advantage, Inc. System for asset tracking
US20030050038A1 (en) * 2001-08-17 2003-03-13 Luther Haave Method and system for asset tracking
US7801506B2 (en) 2001-08-17 2010-09-21 Luther Haave System for asset tracking
US7468659B2 (en) 2001-08-17 2008-12-23 Luther Haave Method of configuring a tracking device
WO2003025618A3 (en) * 2001-09-14 2003-08-14 Sirf Tech Inc Advanced power management for satellite positioning system
US7573422B2 (en) * 2001-09-14 2009-08-11 Sirf Technology Holdings, Inc. Advanced power management for satellite positioning system
US20050083230A1 (en) * 2001-09-14 2005-04-21 Harvey Robert S. Advanced power management for satellite positioning system
US7848763B2 (en) 2001-11-01 2010-12-07 Airbiquity Inc. Method for pulling geographic location data from a remote wireless telecommunications mobile unit
GB2418554A (en) * 2001-12-14 2006-03-29 Nokia Corp Mobile location device
US20070290923A1 (en) * 2001-12-14 2007-12-20 Nokia Corporation Relating to mobile location devices and methods
US7266378B2 (en) 2001-12-14 2007-09-04 Nokia Corporation Mobile location devices and methods
GB2383216B (en) * 2001-12-14 2006-06-21 Nokia Corp Improvements in or relating to mobile location devices and methods
US7577442B2 (en) 2001-12-14 2009-08-18 Nokia Corporation Mobile location devices and methods
US20030134657A1 (en) * 2001-12-14 2003-07-17 Heikki Norta Mobile location devices and methods
GB2383216A (en) * 2001-12-14 2003-06-18 Nokia Corp Location of Mobile Devices
US6581546B1 (en) 2002-02-14 2003-06-24 Waters Instruments, Inc. Animal containment system having a dynamically changing perimeter
US20040249534A1 (en) * 2002-04-12 2004-12-09 Kunihiro Yamada Power supply management system for vehicle mounted apparatus
US10327115B2 (en) 2002-04-24 2019-06-18 Ipventure, Inc. Method and system for enhanced messaging using movement information
US11041960B2 (en) * 2002-04-24 2021-06-22 Ipventure, Inc. Method and apparatus for intelligent acquisition of position information
US9049571B2 (en) 2002-04-24 2015-06-02 Ipventure, Inc. Method and system for enhanced messaging
US9074903B1 (en) 2002-04-24 2015-07-07 Ipventure, Inc. Method and apparatus for intelligent acquisition of position information
US9182238B2 (en) 2002-04-24 2015-11-10 Ipventure, Inc. Method and apparatus for intelligent acquisition of position information
US7218938B1 (en) 2002-04-24 2007-05-15 Chung Lau Methods and apparatus to analyze and present location information
US7403972B1 (en) 2002-04-24 2008-07-22 Ip Venture, Inc. Method and system for enhanced messaging
US8753273B1 (en) 2002-04-24 2014-06-17 Ipventure, Inc. Method and system for personalized medical monitoring and notifications therefor
US20080261636A1 (en) * 2002-04-24 2008-10-23 Chung Lau Method and system for enhanced messaging
US9930503B2 (en) 2002-04-24 2018-03-27 Ipventure, Inc. Method and system for enhanced messaging using movement information
US10614408B2 (en) 2002-04-24 2020-04-07 Ipventure, Inc. Method and system for providing shipment tracking and notifications
US20200064491A1 (en) * 2002-04-24 2020-02-27 Ipventure, Inc. Method and apparatus for intelligent acquisition of position information
US9456350B2 (en) 2002-04-24 2016-09-27 Ipventure, Inc. Method and system for enhanced messaging
US8620343B1 (en) 2002-04-24 2013-12-31 Ipventure, Inc. Inexpensive position sensing device
US10516975B2 (en) 2002-04-24 2019-12-24 Ipventure, Inc. Enhanced messaging using environmental information
US10356568B2 (en) 2002-04-24 2019-07-16 Ipventure, Inc. Method and system for enhanced messaging using presentation information
US10848932B2 (en) 2002-04-24 2020-11-24 Ipventure, Inc. Enhanced electronic messaging using location related data
US9596579B2 (en) 2002-04-24 2017-03-14 Ipventure, Inc. Method and system for enhanced messaging
US10664789B2 (en) 2002-04-24 2020-05-26 Ipventure, Inc. Method and system for personalized medical monitoring and notifications therefor
US11032677B2 (en) 2002-04-24 2021-06-08 Ipventure, Inc. Method and system for enhanced messaging using sensor input
US6975941B1 (en) 2002-04-24 2005-12-13 Chung Lau Method and apparatus for intelligent acquisition of position information
US10761214B2 (en) * 2002-04-24 2020-09-01 Ipventure, Inc. Method and apparatus for intelligent acquisition of position information
US9706374B2 (en) 2002-04-24 2017-07-11 Ipventure, Inc. Method and system for enhanced messaging using temperature information
US11054527B2 (en) 2002-04-24 2021-07-06 Ipventure, Inc. Method and apparatus for intelligent acquisition of position information
US8447822B2 (en) 2002-04-24 2013-05-21 Ipventure, Inc. Method and system for enhanced messaging
US9759817B2 (en) 2002-04-24 2017-09-12 Ipventure, Inc. Method and apparatus for intelligent acquisition of position information
US11067704B2 (en) 2002-04-24 2021-07-20 Ipventure, Inc. Method and apparatus for intelligent acquisition of position information
US11218848B2 (en) 2002-04-24 2022-01-04 Ipventure, Inc. Messaging enhancement with location information
US9769630B2 (en) 2002-04-24 2017-09-19 Ipventure, Inc. Method and system for enhanced messaging using emotional information
US10034150B2 (en) 2002-04-24 2018-07-24 Ipventure, Inc. Audio enhanced messaging
US9998886B2 (en) 2002-04-24 2018-06-12 Ipventure, Inc. Method and system for enhanced messaging using emotional and locational information
US11238398B2 (en) 2002-04-24 2022-02-01 Ipventure, Inc. Tracking movement of objects and notifications therefor
US20180011201A1 (en) * 2002-04-24 2018-01-11 Ipventure, Inc. Method and apparatus for intelligent acquisition of position information
US8285484B1 (en) * 2002-04-24 2012-10-09 Ipventure, Inc. Method and apparatus for intelligent acquisition of position information
US11249196B2 (en) 2002-04-24 2022-02-15 Ipventure, Inc. Method and apparatus for intelligent acquisition of position information
US11308441B2 (en) 2002-04-24 2022-04-19 Ipventure, Inc. Method and system for tracking and monitoring assets
US7905832B1 (en) 2002-04-24 2011-03-15 Ipventure, Inc. Method and system for personalized medical monitoring and notifications therefor
US10715970B2 (en) 2002-04-24 2020-07-14 Ipventure, Inc. Method and system for enhanced messaging using direction of travel
US8176135B2 (en) 2002-04-24 2012-05-08 Ipventure, Inc. Method and system for enhanced messaging
US7953809B2 (en) 2002-04-24 2011-05-31 Ipventure, Inc. Method and system for enhanced messaging
US11368808B2 (en) 2002-04-24 2022-06-21 Ipventure, Inc. Method and apparatus for identifying and presenting location and location-related information
US11418905B2 (en) 2002-04-24 2022-08-16 Ipventure, Inc. Method and apparatus for identifying and presenting location and location-related information
US11915186B2 (en) 2002-04-24 2024-02-27 Ipventure, Inc. Personalized medical monitoring and notifications therefor
US7321774B1 (en) 2002-04-24 2008-01-22 Ipventure, Inc. Inexpensive position sensing device
US7196621B2 (en) 2002-05-07 2007-03-27 Argo-Tech Corporation Tracking system and associated method
US20050174235A1 (en) * 2002-05-07 2005-08-11 Davis Brian J. Tracking system and assosciated method
US7218227B2 (en) 2002-05-07 2007-05-15 Argo-Tech Corporation Tracking system and associated method
US7813875B2 (en) 2002-10-10 2010-10-12 Sirf Technology, Inc. Layered host based satellite positioning solutions
US20050234982A1 (en) * 2002-10-10 2005-10-20 Clifford Yamamoto Layered host based satellite positioning solutions
US8954269B2 (en) 2002-10-10 2015-02-10 Csr Technology Inc. Host based satellite positioning systems
US7043363B2 (en) * 2002-10-10 2006-05-09 Sirf Technology, Inc. Host based satellite positioning systems
US20110029240A1 (en) * 2002-10-10 2011-02-03 Sirf Technology Inc. Host based satellite positioning systems
US20050240345A1 (en) * 2002-10-10 2005-10-27 Clifford Yamamoto Host based satellite positioning systems
US6774838B2 (en) * 2002-12-27 2004-08-10 Kinpo Electronics, Inc. Power saving device and method for GPS receiver
JP2004236306A (en) * 2003-01-10 2004-08-19 Stmicroelectronics Inc Electronic apparatus including kinetic sensitivity power switching integrated circuit and method relating thereto
EP1437639A3 (en) * 2003-01-10 2006-09-13 STMicroelectronics, Inc. Electronic device including motion sensitive power switching integrated circuit and related methods
US20040177352A1 (en) * 2003-03-03 2004-09-09 Narayanaswamy Sreedhara Srinivasulu Universal deployment tool
US7069553B2 (en) * 2003-03-03 2006-06-27 Computer Associates Think, Inc. Universal deployment tool
US20040192386A1 (en) * 2003-03-26 2004-09-30 Naveen Aerrabotu Method and apparatus for multiple subscriber identities in a mobile communication device
WO2004097447A1 (en) * 2003-04-29 2004-11-11 Telenor Asa A system and a method for managing the power consumption of a tracking device
US20080022940A1 (en) * 2003-07-11 2008-01-31 Bradley Kirsch Composite Absorbent Particles with Superabsorbent Material
US20050017855A1 (en) * 2003-07-25 2005-01-27 John Harvey System for providing a virtual vehicle boundary
US20060238340A1 (en) * 2003-07-25 2006-10-26 John Harvey System for providing a virtual vehicle boundary
US7612668B2 (en) 2003-07-25 2009-11-03 Qualcomm Incorporated System for providing a virtual vehicle boundary
US7327250B2 (en) * 2003-07-25 2008-02-05 Qualcomm Incorporated System for providing a virtual vehicle boundary
US20070189215A1 (en) * 2004-01-07 2007-08-16 Huawei Technologies Co., Ltd. Method for reducing interface load of home subscriber server
EP1776688B1 (en) * 2004-03-19 2013-05-08 Arbitron Inc. Gathering data concerning publication usage
EP1776688A2 (en) * 2004-03-19 2007-04-25 Arbitron Inc. Gathering data concerning publication usage
US20060119508A1 (en) * 2004-11-19 2006-06-08 Miller John D Method and apparatus for conserving power on a mobile device through motion awareness
US7408506B2 (en) * 2004-11-19 2008-08-05 Intel Corporation Method and apparatus for conserving power on a mobile device through motion awareness
US7733853B2 (en) 2005-01-31 2010-06-08 Airbiquity, Inc. Voice channel control of wireless packet data communications
US8036201B2 (en) 2005-01-31 2011-10-11 Airbiquity, Inc. Voice channel control of wireless packet data communications
US20090040100A1 (en) * 2005-04-04 2009-02-12 Atc Technologies, Llc Radioterminals and associated operating methods that transmit position information responsive to change/rate of change of position
US7453396B2 (en) 2005-04-04 2008-11-18 Atc Technologies, Llc Radioterminals and associated operating methods that alternate transmission of wireless communications and processing of global positioning system signals
US7696924B2 (en) 2005-04-04 2010-04-13 Atc Technologies, Llc Radioterminals and associated operating methods that transmit position information responsive to change/rate of change of position
US20060232465A1 (en) * 2005-04-04 2006-10-19 Levin Lon C Radioterminals and associated operating methods that alternate transmission of wireless communications and processing of global positioning system signals
US20060259241A1 (en) * 2005-04-07 2006-11-16 Tomas Nylen Mobile device
WO2006114373A1 (en) * 2005-04-26 2006-11-02 Sony Ericsson Mobile Communications Ab Portable electronic devices, methods and computer program products using activity-triggered gps updates
US7176833B2 (en) 2005-04-26 2007-02-13 Sony Ericsson Mobile Communications Ab Portable electronic devices, methods and computer program products using activity-triggered GPS updates
US20060238417A1 (en) * 2005-04-26 2006-10-26 Magnus Jendbro Portable electronic devices, methods and computer program products using activity-triggered GPS updates
US10139472B2 (en) * 2005-05-10 2018-11-27 Zih Corp. Extensible object location system and method using multiple references
US7911329B2 (en) 2005-09-12 2011-03-22 Skybitz, Inc. System and method for adaptive motion sensing with location determination
EP1931536A2 (en) * 2005-09-12 2008-06-18 Skybitz, Inc. System and method for reporting a status of an asset
US20110224943A1 (en) * 2005-09-12 2011-09-15 Rich Battista System and Method for Adaptive Motion Sensing with Location Determination
US20110010044A1 (en) * 2005-09-12 2011-01-13 Rich Battista System and Method for Reporting a Status of an Asset
US7804394B2 (en) 2005-09-12 2010-09-28 Skybitz, Inc. System and method for reporting a status of an asset
US20090135027A1 (en) * 2005-09-12 2009-05-28 Rich Battista System and method for reporting a status of an asset
EP1931536A4 (en) * 2005-09-12 2010-08-04 Skybitz Inc System and method for reporting a status of an asset
US9704399B2 (en) 2005-09-12 2017-07-11 Skybitz, Inc. System and method for adaptive motion sensing with location determination
US9064421B2 (en) 2005-09-12 2015-06-23 Skybitz, Inc. System and method for reporting a status of an asset
US9784583B2 (en) 2005-09-12 2017-10-10 Skybitz, Inc. System and method for reporting a status of an asset
US9128179B2 (en) 2005-09-12 2015-09-08 Skybitz, Inc. System and method for adaptive motion sensing with location determination
US20090121902A1 (en) * 2005-09-12 2009-05-14 Rich Battista System and method for adaptive motion sensing with location determination
EP1808708A2 (en) * 2006-01-11 2007-07-18 Kinpo Electronics Inc. Power saving device for GPS device
EP1808708A3 (en) * 2006-01-11 2010-01-13 Kinpo Electronics Inc. Power saving device for GPS device
US7924934B2 (en) 2006-04-07 2011-04-12 Airbiquity, Inc. Time diversity voice channel data communications
WO2007120609A3 (en) * 2006-04-11 2008-01-24 Gen Electric Method and apparatus for power management of asset tracking system
US20070239321A1 (en) * 2006-04-11 2007-10-11 Mcaden Mark Method and apparatus for power management of asset tracking system
WO2007120609A2 (en) * 2006-04-11 2007-10-25 General Electric Company Method and apparatus for power management of asset tracking system
US7966105B2 (en) 2006-04-11 2011-06-21 Asset Intelligence, Llc Method and apparatus for power management of asset tracking system
US20080012693A1 (en) * 2006-07-11 2008-01-17 Denso Corporation Vehicle communication system
US9454885B2 (en) 2007-03-29 2016-09-27 Zih Corp. Active virtual fence using mesh networked RF tags
US20100148961A1 (en) * 2007-03-29 2010-06-17 Sandlinks Systems Ltd. Active virtual fence using mesh networked rf tags
US8890677B2 (en) 2007-03-29 2014-11-18 Zebra Enterprise Solutions Corp. Active virtual fence using mesh networked RF tags
FR2915343A1 (en) * 2007-04-20 2008-10-24 Wavecom Sa METHOD AND DEVICE FOR TRACKING, COMPUTER PROGRAM PRODUCT, STROKING METHOD AND CORRESPONDING RADIOCOMMUNICATION MODULE.
WO2008132088A1 (en) * 2007-04-20 2008-11-06 Wavecom Tracking method and device, and related computer software product, storage medium and radiocommunication module
US20080300786A1 (en) * 2007-05-29 2008-12-04 Daniel Ezra Greenberg System and method for tracking media
US8131421B2 (en) 2007-05-29 2012-03-06 Fujifilm Recording Media U.S.A., Inc. System and method for tracking media
US7979095B2 (en) 2007-10-20 2011-07-12 Airbiquity, Inc. Wireless in-band signaling with in-vehicle systems
US8369393B2 (en) 2007-10-20 2013-02-05 Airbiquity Inc. Wireless in-band signaling with in-vehicle systems
EP2226778A1 (en) * 2007-12-24 2010-09-08 Caterpillar, Inc. A saving power system and method for managing communication of a moving object
EP2226778A4 (en) * 2007-12-24 2012-01-25 Caterpillar Inc A saving power system and method for managing communication of a moving object
US20110034144A1 (en) * 2007-12-24 2011-02-10 Gang Yang System and method for managing communication of a moveable entity for energy conservation
US8626107B2 (en) 2007-12-24 2014-01-07 Caterpillar Inc. System and method for managing communication of a moveable entity for energy conservation
CN101470182B (en) * 2007-12-24 2013-07-03 卡特彼勒公司 System and method for electricity-saving management of mobile entity communication
US8594138B2 (en) 2008-09-15 2013-11-26 Airbiquity Inc. Methods for in-band signaling through enhanced variable-rate codecs
US7983310B2 (en) 2008-09-15 2011-07-19 Airbiquity Inc. Methods for in-band signaling through enhanced variable-rate codecs
US8036600B2 (en) 2009-04-27 2011-10-11 Airbiquity, Inc. Using a bluetooth capable mobile phone to access a remote network
US8195093B2 (en) 2009-04-27 2012-06-05 Darrin Garrett Using a bluetooth capable mobile phone to access a remote network
US8073440B2 (en) 2009-04-27 2011-12-06 Airbiquity, Inc. Automatic gain control in a personal navigation device
US8452247B2 (en) 2009-04-27 2013-05-28 Airbiquity Inc. Automatic gain control
US8346227B2 (en) 2009-04-27 2013-01-01 Airbiquity Inc. Automatic gain control in a navigation device
US8418039B2 (en) 2009-08-03 2013-04-09 Airbiquity Inc. Efficient error correction scheme for data transmission in a wireless in-band signaling system
US8766797B2 (en) 2009-09-25 2014-07-01 Fedex Corporate Services, Inc. Sensor based logistics system
US9633327B2 (en) 2009-09-25 2017-04-25 Fedex Corporate Services, Inc. Sensor zone management
US10902372B2 (en) 2009-09-25 2021-01-26 Fedex Corporate Services, Inc. Sensor zone management
US8239169B2 (en) 2009-09-25 2012-08-07 Gregory Timothy L Portable computing device and method for asset management in a logistics system
US11288621B2 (en) 2009-09-25 2022-03-29 Fedex Corporate Services, Inc. Sensor based logistics system
US8560274B2 (en) 2009-09-25 2013-10-15 Fedex Corporate Services, Inc. Portable computing device and method for asset management in a logistics system
US8299920B2 (en) 2009-09-25 2012-10-30 Fedex Corporate Services, Inc. Sensor based logistics system
US11748692B2 (en) 2009-09-25 2023-09-05 Fedex Corporate Servics, Inc. Sensor zone management
US9720480B2 (en) 2009-09-25 2017-08-01 Fedex Corporate Services, Inc. Portable computing device and method for asset management in a logistics system
US11062254B2 (en) 2009-09-25 2021-07-13 Fedex Corporate Services, Inc. Sensor based logistics system
US9002679B2 (en) 2009-09-25 2015-04-07 Fedex Corporate Services, Inc. Portable computing device and method for asset management in a logistics system
US8249865B2 (en) 2009-11-23 2012-08-21 Airbiquity Inc. Adaptive data transmission for a digital in-band modem operating over a voice channel
US8532670B2 (en) 2010-06-02 2013-09-10 Deutsche Telekom Ag Apparatus, method, and system for sensing suppression for location-based applications
US9311616B2 (en) * 2010-06-14 2016-04-12 On-Board Communications, Inc. System and method for determining equipment utilization changes based on ignition and motion status
WO2011159431A1 (en) * 2010-06-14 2011-12-22 On-Board Communications, Inc. System and method for determining equipment utilization
US20110307141A1 (en) * 2010-06-14 2011-12-15 On-Board Communications, Inc. System and method for determining equipment utilization
US9305406B2 (en) 2011-08-01 2016-04-05 Divelbiss Corporation and Kokosing Construction Co., Inc. Asset monitoring and fueling system
US8848825B2 (en) 2011-09-22 2014-09-30 Airbiquity Inc. Echo cancellation in wireless inband signaling modem
US10169822B2 (en) 2011-12-02 2019-01-01 Spireon, Inc. Insurance rate optimization through driver behavior monitoring
US10255824B2 (en) 2011-12-02 2019-04-09 Spireon, Inc. Geospatial data based assessment of driver behavior
US20130227061A1 (en) * 2012-02-15 2013-08-29 Bing Liu Engine, system and method of providing location-based social services
WO2013163135A1 (en) * 2012-04-24 2013-10-31 Analog Devices, Inc. Accelerometer-controlled master power switch for electronic devices
US9507399B2 (en) 2012-04-24 2016-11-29 Analog Devices, Inc. Accelerometer-controlled master power switch for electronic devices
US9355381B2 (en) 2012-06-01 2016-05-31 Senaya, Inc. Asset tracking system with adjusted ping rate and ping period
US9316737B2 (en) 2012-11-05 2016-04-19 Spireon, Inc. Container verification through an electrical receptacle and plug associated with a container and a transport vehicle of an intermodal freight transport system
US9779379B2 (en) 2012-11-05 2017-10-03 Spireon, Inc. Container verification through an electrical receptacle and plug associated with a container and a transport vehicle of an intermodal freight transport system
US9402160B2 (en) 2012-12-31 2016-07-26 Senaya, Inc. Methodology to extend battery power in asset-tracking device
US9779449B2 (en) 2013-08-30 2017-10-03 Spireon, Inc. Veracity determination through comparison of a geospatial location of a vehicle with a provided data
US20150070169A1 (en) * 2013-09-12 2015-03-12 Alistair Ross-Mowat Personal Possession Alarm
US10223744B2 (en) 2013-12-31 2019-03-05 Spireon, Inc. Location and event capture circuitry to facilitate remote vehicle location predictive modeling when global positioning is unavailable
US9551788B2 (en) 2015-03-24 2017-01-24 Jim Epler Fleet pan to provide measurement and location of a stored transport item while maximizing space in an interior cavity of a trailer
US10713642B2 (en) 2016-08-05 2020-07-14 Denso International America, Inc. System and method for selecting a parking space using a mobile device
US10403104B2 (en) * 2017-08-17 2019-09-03 Vivek KANGRALKAR System and method for tracking of deployed units
US10748395B2 (en) * 2017-08-17 2020-08-18 Vivek Kangralkar System and method for tracking of deployed units
US20200177221A1 (en) * 2018-12-04 2020-06-04 The United States Of America As Represented By Secretary Of The Navy Submerged Maritime Tag Track and Locate Device and System
US20210173035A1 (en) * 2019-12-10 2021-06-10 Orange Method for Locating a Geolocation Beacon

Similar Documents

Publication Publication Date Title
US6067044A (en) Remote tracking and sensing system and method
US7065446B2 (en) Real-time smart mobile device for location information processing
RU2380261C2 (en) System of railway car tracking
US5068656A (en) System and method for monitoring and reporting out-of-route mileage for long haul trucks
CN101654113B (en) System, method and computer readable media for operating a distributed power train
US8760274B2 (en) System for communicating between a trailer tracking device, a truck tracking device, and a central monitoring station
RU2321954C2 (en) Intelligent communications, management and control system for ground-based vehicles
US6144916A (en) Itinerary monitoring system for storing a plurality of itinerary data points
US5917433A (en) Asset monitoring system and associated method
CN103514708B (en) Based on the logistics transportation intelligence short message information alarming apparatus of the Big Dipper and GIS
EP3025926A1 (en) Condition monitoring system, condition monitoring unit and method for monitoring a condition of a bearing unit for a vehicle
AU2911600A (en) Portable data support with a detachable mini chip card
US20020040270A1 (en) Method and apparatus for vehicle navigation service using DSRC system
JP4876628B2 (en) Approach notification system, and in-vehicle device and portable terminal used therefor
WO2007047359B1 (en) System and method for real-time management of mobile resources
US20030223387A1 (en) Remote vehicle communication associate
CA2210270A1 (en) Railway crossing collision avoidance system
CN102656062B (en) For reducing equipment and the method for the flase alarm in stolen vehicle tracking
JPH09120410A (en) Method for gathering of data by tracking of freight sensor
US6342847B1 (en) Virtual fence system and method
CN101751793A (en) Vehicle running safety auxiliary network management system and method thereof
GB2025185A (en) Vehicle location system
US20090128303A1 (en) System and method for employing geographically overlapping autonomous static and mobile wireless networks for asset tracking
CN114199258A (en) Digital association and high-precision positioning and tracking system for multi-type intermodal containers
EP3893526A1 (en) Asset and vehicle tracking

Legal Events

Date Code Title Description
AS Assignment

Owner name: NATIONAL SYSTEMS AND RESEARCH, COLORADO

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WHELAN, TERRENCE W.;KASHANI, AMIR H. M.;REEL/FRAME:009492/0030

Effective date: 19980921

AS Assignment

Owner name: GPS TECHNOLOGY SOLUTIONS, LLC, COLORADO

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:NATIONAL SYSTEMS & RESEARCH CO.;REEL/FRAME:014653/0338

Effective date: 20030829

FPAY Fee payment

Year of fee payment: 4

SULP Surcharge for late payment
REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Lapsed due to failure to pay maintenance fee

Effective date: 20080523